Back mobilizing bar



FIG. 1 is a bottom perspective view of the present design a back mobilizing bar.

FIG. 2 is a front bottom perspective view of the back mobilizing bar shown in FIG. 1; and,

FIG. 3 is a top perspective view of the back mobilizing bar shown in FIG. 1. 

The ornamental design for a back mobilizing bar, as shown and described. 